Can I tell you I actually thought they did a decent job with the mother daughter relationship especially when the mother sacrificed herself at the end I actually felt for them. It was an interesting dynamic for me of when a loving relationship has to deal with a harsh reality of someone you love being responsible for wrong choices. Even though she called her a monster at the end of the day deep inside she still obviously loved her which I think added a decent enough layer of storytelling.
I've seen some people saying how the human plot was stupid because the motives seemed bogus but I disagree. Thankfully I haven't personally suffered the loss of a child, but I've had a few scares and had a tasted of those sorts of emotions and I can totally believe the impact such a loss would have on someone and at the hand of something as fantastical as a giant monster, I could see growing such a distorted sense of purpose to justify what's going on, trying to believe that your loss was part of some greater action and feeling a need to facilitate that action so it isn't just your loss but but a shared world experience. Similar for Jonah, it's not that far fetched to believe someone has lost all faith in man to the point of being disgusted with his every action and feeling a need to hit a reset button on the world.